Street-sweeper



(No Model.)

A. GARTNER. STREET SWEEPER.

Nb. 572,791. Patented Dec. 8, 1896.

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UNITED STATES PATENT OFFICE.

ALFRED GARTNER, NEWARK, NEW JERSEY, ASSIGNOR TO PLUMMER S. PAGE, OFSORANTON, PENNSYLVANIA.

STREET-SWEEPER.

SPECIFICATION forming part of Letters Patent No. 572,791, dated December8, 1896.

' Application filed April 27, 1896. Serial No. 589,196- (No model.) i

To all whom it may concern.-

Be it known that I, ALFRED GARTNER, a citizen of the United States,residing in Newark, county of Essex, and State of New J ersey, haveinvented certain new and useful Improvements in Street-Sweepers; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters of reference marked there-'on, which form a part of this specification.

This invention relates to improvements in streetsweepers of the classillustrated in p the United States Letters Patent No. 558,719,

dated April 21, 1896. Its object is to provide a street-sweeper in whichthe revolving brush can be raised and lowered, together with theelevator-casing and hood, or independent of the same, of simple, strong,and durable construction, easily handled, and reliable in operation.

The invention consists in the improved street-sweeper and in thecombination and arrangement of the various parts thereof, substantiallyas will be hereinafter more fully described and finally embodied in theclauses of the claim.

In the accompanying drawings,Figure 1 is a side elevation of a portionof a street-sweeper provided with my improvement, only those portions ofthe sweeper being shown which are necessary to fully illustrate thenature of my said invention; Fig. 2, an enlarged detail view of acertain adjustable bracket for supporting the power-transmittin g meansand the revolving brush; and Fig. 3, a detail sectional view on the linea: 00 of Fig. 1, showing only those parts which form the bracket-adjusting mechanism.

In said drawings, a represents the truck, I) one of the rear wheels, andc the axle for the same. The inclined elevator-casing d is fulcrumed onsaid axle and is provided at its lower end with the hood 6-, coveringthe revolving brush 0, all of the usual andwellknown construction.

On the axle c and between the casing and the wheel is secured thebeveled gear f, meshing into the pinion g, secured at or near the upperend of the shaft h, which latter has its bearings in the lugs 71projecting at right angles from the link or bracket-plate h. The shaft his prevented from lateral movement by means of the collars 71 securedthereon and bearing against the lugs h The upper portion 7L5 of saidbracket-plate h is provided with a hole h, by means of which it isfulcrumed 011 the axle 0, while the lower portion h of saidbracket-plate is provided with a hole h", adapted to receive and to thusform the bearing for the shaft n of the revolving brush 0. On the lowerend of the said shaft h is secured a beveled pinion 1', meshing intobeveled gear m, which latter is secured on the shaft n. By thisarrangement the motion of the axle c is transmitted to the shaft n andthe brush revolved in a direction opposite to that of the axle c and ofthe rear wheels I), as will be manifest.

On one side of the bracket-plate h is arranged an extension or arm 0",provided with an elongated curved slot 1*, radial to the center of theaxle and engaged by the curved guide-block r which latter is secured toand projects at right angles from the elevatorcasing d. The rear portionof said arm r is curved parallel to the curve of the slot, and isprovided with a series of teeth 0, adapted to be engaged by the teeth ofthe gear or pinion q, which'latter is secured on the shaft 19, havingits bearings in or on the elevator-casing d.

The shaft 19 is squared at its outer end, as at 19, and is thus adaptedto be operated by a crank, as will be manifest. A spring-controlled pawlq, preferably pivoted on the easing d, holds the gear or pinion q in itsadjusted position.

The sides of the hood 6 are provided with curved elongated slots e,radial to the center of the axle c, and are penetrated by therevolving-brush-carrying shaft 01.

It will be understood that while a bracketplate h, (for supporting theshaft 7%) together with its toothed extension 7' and the operating-gearq is arranged on each side of the machine the power-transmittingmechanism is only needed on one side thereof.

In operation when the casing d and its hood eare raised or lowered byany well-known means the revolving brush is raised or loweredsimultaneousl but should it be required to raise or lower the brush 0independent of the casing (say, for instance, the brush has been reducedin diameter by constant wear and use) the shaft 19 is operated, wherebythe link or bracket-plate h is respectively swung upward or downward onits fulcrum, (the axle 0,) as will be manifest.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a street sweeper, the combination with the truck on wheels, of aninclined elevator-casin g f ulcrumed on the axle of the rear wheels, abracket-plate or link also fulcrumed on the axle and on each side of thecasing, a revolving brush at the lower end of the elevator-casing andcarried by said links, a curved arm or extension projecting from thelink and provided with a series of teeth, a shaft traversing theelevator-casing, a gear mounted on said shaft andengagin g the teeth onthe curved arm, apawl pivotally secured on the casing and engaging thegear, and means-for transmitting the motion of the rear axle to therevolving brush, all said parts, substantially as described.

2'. In a streetsweeper, the combination with the truck on wheels, of aninclined elevator-casin g f ulcrumed on the axle of the rear wheels,abracket-plate or link also f ulcrumed on the axleand on each side ofthe casing, a revolving brushat the lower end of the elevator-casing andcarried by said links, an arm or extension projecting from the link andprovided with an elongated curved slot, a curved guide-block projectingfrom the easing and engaging said slot, a series of teeth arranged onsaid curved arm, in an arc par-' allel to the slot, a shaft traversingthe elevator-casing, agear-wheel mounted on said shaft and engaging theteeth on the arm, a pawl pivotally secured on the elevator-casin g andcontrolling the gear-wheel, and means for transmitting the motion fromthe rear axle to the revolving brush, all said parts, substantially asand for the purposes described.

3. In a streetsweeper, the combination with the truck on wheels, of aninclined elevator-casing fulcrumed on the axle of the rear wheels, alink also fulcrumed on the axle and on each side of the casing, arevolving brush arranged at the lower end of the casing and carried bysaid links, abeveled gear mounted on the rear axle, a shaftsupported bysaid links, a beveled pinion at the upper end of said shaft and engagingthe beveled gear on the axle, a beveled pinion at the lower end of saidshaft, a beveled gear meshing into said beveled pinion and mounted onthe revolvingbru'sh-carrying. shaft, a curved arm projecting from thelink and provided with a series of teeth, a shaft traversing theelevator-casing, and a pawl-controlled gear mounted on said shaft andengaging the teeth on the curved arm, all said parts, substantially asand for the purposes described.

4. In a street sweeper, the combination withthe truck on wheels, of aninclined elevator-casin g f ulcrumed on the axle of the rear wheels, ahood arranged on the lower end of said casing and provided at each sidewith a curved elongated slot, a bracket-plate or link also fulcrumed onthe axle of the rear wheels and on each side of the casing, a shaft,carried by said links, arranged at the lower end of the casing andpenetrating the elongated curved slots of the hood, a brush mounted onsaid shaft, a beveled gear also mounted on said shaft, a beveled gearsecured on the rear axle, a shaft supported by said link, a beveledpinion at each end of the shaft and engaging the beveled gears on theaxle and the revolving-brush-carrying shaft respectively, and

the purposes described.

In testimony that I claim the foregoing I have hereunto set my hand this10th day of April, 1896.

ALFRED GARTNER.

Witnesses:

FELICITAS GARTNER, DUNCAN M. ROBERTSON.

